摘要
20CrMnTiH钢的工艺流程为100 t转炉-LF-VD-方坯连铸-轧制。通过采取提高转炉出钢[C]≥0.08%,优化LF精炼渣系,控制渣中CaO/Al2O3 1.5~1.7,用喂SiCa线代替喂Ca线,防止钢水二次氧化等措施,20CrMnTiH齿轮钢氧含量0.001 5%~0.001 9%和夹杂物级别≤1.5。
The process flowsheet for steel 20CrMnTiH is 100 t BOF-LF-VD-bloom casting-rolling.By improving converter tapping [C]≥0.08%,optimizing refining slag system,controlling the CaO/Al2O3 in slag 1.5 to 1.7,using feeding SiCa wire to replace feeding Ca wire and preventing secondary oxidation of molten steel in casting,the oxygen content in gear steel 20CrMnTiH is 0.001 5%~0.001 9% and rating of inclusions in steel is ≤1.5.
作者
王敏
郭志强
Wang Min;Guo Zhiqiang(Hubei Engineering Institute,Huangshi 435000;Technology Center,Fujian Sansteel Group Co Ltd,Sanming 365000)
出处
《特殊钢》
北大核心
2020年第2期18-20,共3页
Special Steel
